Sixty-six Chinese athletes attended the 2014 Winter Olympics，three ________won gold medals．
| A．of whom | B．of them |
| C．among which | D．among them |
John as well as his good friends often skating in winter．
| A．is going | B．go | C．goes | D．are going |
Liu Ming is said abroad for one year before he came to teach in our school．
| A．to have studied | B．to study |
| C．to be studying | D．to have been studying |
The boy lost his key, so he has no choice but till his mother came home．
| A．waited | B．waiting | C．wait | D．to wait |
Nick is looking for another job because he feels that nothing he does ________ his boss.
| A．serves | B．satisfies | C．promises | D．supports |
--Mary, I think you had better say sorry to John．
--．It was his fault, NOT mine!
| A．Not possible | B．No way | C．No chance | D．Not at all |